XMSTRINGCOMPONENTTYPE(3)

💖 XmStringComponentType 💖

okay bestie, so this is a page from the library call section of the manual, and it's all about XmStringComponentType, the data type for compound string components. yes it's giving "Motif internals" but stay with me, it's actually so good once it clicks 🦋

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🌸 NAME 🌸

XmStringComponentType — the data type for compound string components, periodt.

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✨ SYNOPSIS ✨

#include <Xm/Xm.h>

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💅 DESCRIPTION 💅

So. XmStringComponentType is the data type that specifies compound string component types. A compound string component is basically one little piece of a compound string, and it can have a value and a length. Like, every component is a lil guy with a value and a length, and a compound string is just a bunch of these lil guys lined up 💖

A compound string component can be one of the following types, and ngl they're grouped by their length and value types, so let's go group by group, no skips, no cap.

the ones with NULL values and lengths of 0 (zero) 🎀

• XmSTRING_COMPONENT_SEPARATOR — this component usually maps to a newline or carriage return in displayed text. it's the lil line break vibe ✨
• XmSTRING_COMPONENT_TAB — you can think of this one as a text component that contains only a single tab. just a tab, that's it, iconic behavior 🫶
• XmSTRING_COMPONENT_LAYOUT_POP — so the layout direction lives on a stack, and the current direction is kept on top of that stack. when this component gets read, the most recently read layout direction gets popped off the stack and replaced by the direction immediately before it. pop it pop it 💅
• XmSTRING_COMPONENT_END — this one marks the end of a compound string, and no other components should follow it. like, that's the finale, nothing after. and if an application doesn't place an XmSTRING_COMPONENT_END component at the end of an XmString, Motif will automatically do it for the application. so thoughtful of her honestly 😭

the one with a value of XmDirection and the length of that direction 🌈

• XmSTRING_COMPONENT_LAYOUT_PUSH — again, the layout direction is kept on a stack, with the current direction on top. this component replaces the current layout direction, and causes another one to be pushed onto the top of this stack. push energy 🔥

the one with a value of XmStringDirection and the length of that direction ⭐

• XmSTRING_COMPONENT_DIRECTION — this component sets the string direction by overriding the previous string direction. she said "new direction, who dis" 💁

the ones with values of type char * (or some equivalent type), and the lengths of those types 👑

• XmSTRING_COMPONENT_LOCALE_TEXT — contains the multibyte text of a compound string.
• XmSTRING_COMPONENT_WIDECHAR_TEXT — contains the widechar text of a compound string.
• XmSTRING_COMPONENT_TEXT — contains the charset text of a compound string. ⚠️ note that a compound string cannot contain both charset and locale (multibyte or widechar) text. pick a lane bestie.
• XmSTRING_COMPONENT_RENDITION_BEGIN — marks the beginning of a new rendition. all text following this component will be rendered using this rendition as the primary one. and if there's already a rendition in effect, it's kept in memory and used to fill in any unspecified values in the primary rendition. renditions are kept until a corresponding XmSTRING_COMPONENT_RENDITION_END component is encountered.
• XmSTRING_COMPONENT_RENDITION_END — signifies that the specified rendition will no longer be used to render text, and will not be available to fill in unspecified values of newer renditions. she's done, she's retired, leave her alone 💜
• XmSTRING_COMPONENT_UNKNOWN — this component type signifies that the component contents belong to an unknown component type. mystery component, very main character 🙈
• XmSTRING_COMPONENT_LOCALE — use this one to specify the locale in which an internationalized application is to execute. and listen, the only valid character string for this component is _MOTIF_DEFAULT_LOCALE. that's it, that's the whole list, don't try anything else 🍓
• XmSTRING_COMPONENT_TAG — for charset text, this is the tag of the font to be used to display the text. this tag is sometimes referred to as the charset tag or the fontlist tag. iykyk ✨
• XmSTRING_COMPONENT_CHARSET — 🚨 this component is obsolete and remains for compatibility with previous releases only. it has been replaced by XmSTRING_COMPONENT_TAG.
• XmSTRING_COMPONENT_FONTLIST_ELEMENT_TAG — 🚨 also obsolete, also just hanging around for compatibility with previous releases. it has also been replaced by XmSTRING_COMPONENT_TAG.

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the order situation 🧚

okay so some compound string components depend on values that are defined in other components. for example, the XmSTRING_COMPONENT_TAB component definition depends on information in the XmSTRING_COMPONENT_RENDITION_BEGIN. to account for these dependencies, a typical compound string will have its member components in the following order:

[
  [ XmSTRING_COMPONENT_LAYOUT_PUSH ]
  [ XmSTRING_COMPONENT_RENDITION_BEGIN ]*
  [ XmSTRING_COMPONENT_TAG | XmSTRING_COMPONENT_LOCALE ]
  [ XmSTRING_COMPONENT_TAB ]*
  [ XmSTRING_COMPONENT_DIRECTION ]
  [ XmSTRING_COMPONENT_TEXT |
    XmSTRING_COMPONENT_LOCALE_TEXT |
    XmSTRING_COMPONENT_WIDECHAR_TEXT ]
  [ XmSTRING_COMPONENT_RENDITION_END ]*
  [ XmSTRING_COMPONENT_LAYOUT_POP ]
  [ XmSTRING_COMPONENT_SEPARATOR ]
]*
XmSTRING_COMPONENT_END

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💖 that's literally the whole page bestie, every component, every caveat, every obsolete flag, all of it. go forth and build your compound strings responsibly. mwah 🫶

and that's a wrap on this library call page, written by the fine folks behind this source and version, dated as shown in the original footer. slay 💅✨🎀